<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <style>
        body {
            padding: 100px;
        }

        article {
            margin-top: 100px;
            width: 300px;
            height: 300px;
            border: solid 3px red;
            /* outline-style: double;
            outline-width: 30px;
            outline-color: #ddd; */
            outline: solid 20px #ddd;
        }

        h2 {
            background: green;
        }

        * {
            margin: 0;
            padding: 0;
        }

        input:focus {
            outline: none;
        }
    </style>
</head>

<body>
    <input type="text" name="title">

    <article>
        <div>houdunren.com</div>
    </article>
    <h2>hdcms.com</h2>
</body>

</html>